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doi:10.1146/annurev.nutr.19.1.217
NNMT is a cytosolic enzyme that catalyzes the methylation of nicotinamide (NAM), a key substrate in the NAD salvage pathway
People with dietary restrictions, such as vegans and vegetarians, who may not get sufficient B12 from their diet, or those with absorption issues, like those with pernicious anemia or gastrointestinal disorders, also often qualify
What Are The Four Stages of B12 Deficiency
Vitamin D Injections involves only the minor, fleeting discomfort of an injection
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